Is there a way to increase the default ping timeout time for MATLAB Ethernet AXI manager for Xilinx FPGA?

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Is there a way to increase the default ping timeout time for MATLAB Ethernet axi manager? Ethernet is so delicate that sometimes it can fail to ping quickly. But unfortunately MATLAB throws a timeout error quickly. Now if you are running a long experiment, and suddenly it gets timed out, it is very bad and sad. Rather we could wait longer for that Ethernet to ping.
So, my question is: is there a way to increase the default ping timeout time for MATLAB Ethernet AXI manager for Xilinx FPGA? If not, can we come up with a workaround?

回答(1 个)

Abhishek Kumar Singh
I don't think there is a direct way to increase the default ping timout time through its built-in settings.
A workaround you can achieve by creating a custom ping function that retries the connection multiple times before giving up.
Here's a sample implementation of one such function:
function success = customPing(ipAddress, maxRetries, timeout)
% customPing - Custom ping function with retry logic
%
% ipAddress - The IP address to ping
% maxRetries - Maximum number of retries
% timeout - Timeout for each ping attempt in seconds
success = false;
retryCount = 0;
while retryCount < maxRetries
try
% Attempt to ping the IP address
[status, ~] = system(sprintf('ping -n 1 -w %d %s', timeout * 1000, ipAddress));
if status == 0
success = true;
fprintf('Ping successful on attempt %d\n', retryCount + 1);
return;
else
retryCount = retryCount + 1;
fprintf('Ping failed on attempt %d, retrying...\n', retryCount);
pause(1); % Wait a bit before retrying
end
catch ME
fprintf('Error during ping: %s\n', ME.message);
retryCount = retryCount + 1;
pause(1); % Wait a bit before retrying
end
end
if ~success
fprintf('Failed to ping %s after %d attempts\n', ipAddress, maxRetries);
end
end
You can use the above function before starting your work to ensure the connection is stable:
ipAddress = '192.168.1.100'; % Replace with your FPGA's IP address
maxRetries = 10; % Number of retries
timeout = 5; % Timeout for each ping attempt in seconds
if customPing(ipAddress, maxRetries, timeout)
disp('Connection is stable, starting the experiment...');
% Your code to start the experiment
else
disp('Connection could not be established, aborting the experiment.');
% Handle the failure case
end
Hope it helps!
  1 个评论
Nadatimuj
Nadatimuj 2024-7-24
编辑:Nadatimuj 2024-7-24
Thanks for the suggestion! Yeah I also ended up doing something similar with chatGPT. Pasting it here. But hopefully MATLAB will consider adding custom ping time.
initalization:
% Initialize AXI managers for the FPGAs, retry if fails to ping
fpga_memories = cell(1, num_partitions);
for i = 1:num_partitions
fpgaID = i;
success = false;
attempts = 0;
while ~success && attempts < max_PingRetries
try
fpga_memories{i} = aximanager('Xilinx', 'interface', 'PLEthernet', ...
'DeviceAddress', ['192.168.0.', num2str(fpgaID)], ...
'Port', num2str(50100 + fpgaID));
success = true;
catch
attempts = attempts + 1;
fprintf('AXI manager creation attempt %d for FPGA %d failed. Retrying...\n', attempts, fpgaID);
end
end
if ~success
error('Failed to create AXI manager for FPGA %d after %d attempts, please reprogram.', fpgaID, max_PingRetries);
end
end
read/write:
%% Functions to retry read/write if Ethernet fails to ping
function writememory_with_retry(fpga_mem, address, data, burstType, maxRetries, fpgaID)
success = false;
attempts = 0;
while ~success && attempts < maxRetries
try
writememory(fpga_mem, address, data, 'BurstType', burstType);
success = true; % If no error occurs, the operation is successful
catch
attempts = attempts + 1;
fprintf('Write memory attempt %d to FPGA %d failed. Retrying...\n', attempts, fpgaID);
end
end
if ~success
error('Failed to write to FPGA %d after %d attempts, please reprogram.', fpgaID, maxRetries);
end
end
function data = readmemory_with_retry(fpga_mem, address, numWords, burstType, maxRetries, fpgaID)
success = false;
attempts = 0;
while ~success && attempts < maxRetries
try
data = readmemory(fpga_mem, address, numWords, 'BurstType', burstType);
success = true; % If no error occurs, the operation is successful
catch
attempts = attempts + 1;
fprintf('Read memory attempt %d from FPGA %d failed. Retrying...\n', attempts, fpgaID);
end
end
if ~success
error('Failed to read from FPGA %d after %d attempts, please reprogram.', fpgaID, maxRetries);
end
end

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